Indeed something was found which tested as blood ... from an area under the tiles.
What else do you think was found?
Well like you i wasn't there - or involved in the investigation.... to know what else was found.
words of someone who was.
http://www.gerrymccannsblogs.co.uk/Nigel/id139.htmWhat is proved
Therefore:
1. The abduction theory is defended by Maddie's parents since the first moment;
2. Within the group, only her parents stated that they observed the open window in the missing girl's bedroom; the majority cannot witness it faithfully because they arrived at the apartment after the alarm was raised;
3. The only statement outside of the group that mentions the open window and the raised shutters comes from Amy, one of the Ocean Club's nannies, who points her observation towards 10.20/10.30 p.m., which is some time after the alarm was raised and does not prove that it was open like that at the time when the crime happened;
4. The set of depositions and witness statements exposes a high number of imprecision, incongruence and contradictions – which, in some cases, may be typified as false testimonies. In particular, the key statement for the abduction theory, from Jane Tanner, which loses all credibility due to the fact that it successively evolved throughout various moments in time, becoming ambiguous and disqualifying itself;
5. There is a cadaver that has not been located, a conclusion that is validated by the English EVRD and CSI dogs and corroborated by the preliminary lab test results.